What can you tell about EMI suppression in audio applications and the usage of a coupling capacitor to reduce the transmission / emission of EMI?
Frank
2021-03-25 20:29:27 +0000 UTC
My primary camera is a Canon XA11 and there are also some Panasonic camera I use for close-ups. No phones were used in the production.
Fran Blanche
2021-03-25 18:51:50 +0000 UTC
How Hi-Fi magnetic recorders work? :D
MVVblog
2021-03-25 18:10:57 +0000 UTC
Yes!
Fran Blanche
2021-03-24 23:37:04 +0000 UTC
It is a language, like any. Learn basic electronics and it will make sense.
Fran Blanche
2021-03-24 23:36:39 +0000 UTC
All mine are vintage - I have never bought a Variac - they just accumulate over the years.
Fran Blanche
2021-03-24 23:36:11 +0000 UTC
Probably a misprint, supposed to be MHz?
Fran Blanche
2021-03-24 23:34:06 +0000 UTC
I have a detailed write-up on my old blog and a couple videos of the amp in action - http://www.frantone.com/designwritings/design_writings3.html#model-a
Fran Blanche
2021-03-24 23:32:57 +0000 UTC
I've told those tales in videos and posted various clips on the channel. Not much to tell.
Fran Blanche
2021-03-24 23:31:51 +0000 UTC
Not much.
Fran Blanche
2021-03-24 23:31:09 +0000 UTC
Nope. Not Ham.
Fran Blanche
2021-03-24 23:30:47 +0000 UTC
No - way too much work.
Fran Blanche
2021-03-24 23:30:28 +0000 UTC
It must seem very alien to pour yr heart out to a camera with possibly no other real person in yr lab, yet the fb you eventually get from all of us must be equally dramatic to you in the opposite way. So my question is how does being a vlogger on a specialist subject work with yr hopes, dreams, disasters, emotions, and technical brain power? Is your cam a cellfone using its front lens so you can see how you appear on screen live? Does that count as 'someone else in the room with you'?
Ymir the Frost Giant
2021-03-24 17:59:06 +0000 UTC
OK, I'll try this.
Without giving the exact video detail away if you don't want to.
What areas are you looking at for upcoming videos?
Dr Andy Hill
2021-03-24 17:21:14 +0000 UTC
Oh! I feel under pressure, I want to ask a question to feel involved but can't think of anything sensible!
Dr Andy Hill
2021-03-24 17:17:50 +0000 UTC
How do you read and understand schematics? You make it look so easy, but, everytime I try to read one, I can't figure out what/where anything is on the actual device.
2021-03-24 17:02:26 +0000 UTC
Dear Fran! I would like to get more into working on my old tube amps (and building new ones from kits)! All the literature I've read has strongly encouraged me to use a variac when testing, for safety purposes. I don't have one and I'm not sure how to start searching. Do you have any perhaps-less-than-obvious advice on variacs (like, for example, 'don't buy one of those new Chinese variacs on Amazon, spend the extra time and find a vintage American one') ...? Any features that I'd really need seeing as I'm going to work on tube amplifiers? Thanks!
Norm Nelson
2021-03-24 15:08:56 +0000 UTC
Hi Fran!
I received an ad for a signal generator that has a minimum frequency of 1nHz.
Am I correct in my calculations that this is a sine wave with a period of 30.84 years?
I believe I have a voltage reference that has a higher frequency output!
Can anyone think of an application for such a low frequency?
(I thought an analogue estimation of Saturn's orbit?)
God of Ramblers
2021-03-24 09:56:57 +0000 UTC
How about showing us your stereo system . The single ended 300b if i heard you right. Im nuts on the tubes hense my name Nimmo pronounced like the nimo tube iee. Your the only one that did pronounces it right Evereyone call me captain Neeemo sorry just could you give us a tour of your stereo thank you. Bill
William Nimmo
2021-03-24 02:58:52 +0000 UTC
OK, Here's a good one for ya. Frantone was a thing. You made quite a variety of pedals. How does audio tinkerie-fiddling work on a bench "just playing" level? I think it might be fun to take an audio signal and change tone, add reverb, maybe isolate specific tones, and send it on to an amplifier w/o frying my receiver or radio.
I'm sure I could just look this up but it would be fun to hear from someone w/ practical been-there-done-that skills. Not asking for trade secrets or anything, just an overview. It would be fun.
Bill Kerr
2021-03-24 01:30:38 +0000 UTC
I'd like to know more about your musical past, I think anecdotes about your band the Mysterons and friendships with other artists such as Les Paul would be interesting.
David Peaker
2021-03-24 00:59:17 +0000 UTC
How much are you able to play guitar these days?
2021-03-23 23:06:11 +0000 UTC
Answer to Q1: Amazon Credit Card -- 1 part.
Dan Swinehart
2021-03-23 21:42:05 +0000 UTC
Questions? How about Quiztions? Here's some:
- What is the simplest/cheapest/easiest way to make a high-frequency oscillator with an absolute minimum of parts?
- What do Laurel & Hardy and Surf Guitar have in common?
- What is the ideal number of very close friends to have?
- What is the cheapest/simplest possible noise source?
- Where do you see FranLab in 10 years? (Optimistic/Realistic)
OK, some of those are actually discussion topics, but feel free to take a whack at them.
BobC
2021-03-23 20:50:21 +0000 UTC
Hi Fran. I always enjoy your work and I know your electronics interests are broad. My questions are have you worked with RF in the past-TV, radio transmitter engineering or possibly two way? Also have you done any automation design, robotics or machine controllers? Thanks much, keep up the good work!
2021-03-23 20:49:39 +0000 UTC
The only question I can think of is, Have you thought about auctioning off old project or stuff you don't want anymore though ebay or whatever? Love your content!!!